If cm on a map represents 20km on the ground ,how far apart are two villages that are 0.5cm aprt on the map?​

10 km

Step-by-step explanation:

20 km = 1 cm

villages are 0.5 cm apart

0.5+0.5=1

20/2= 10

so 10 km.

Since 19 and 31 do not have a common factor, we know we need to make a ratio based on 19 and 31. We need to find the ratio of full parking spots to empty ones. This means that, since there are 19 full parking spots, that in the ratio 19 would be first. The ratio is 19:31